Blocks not breaking

[Plebby123]

So i recently started diamond mining because 40m/hr wow but my rates have been quite garbage. only 25m/hr. One of the main reasons I think that is causing this is because sometimes when I finish breaking a block and move onto the next block, it just doesnt start breaking and I have to click on it again for it to start breaking. Anyone know what is causing this? Is it like a ping issue or something, because I live in na so my ping shouldnt be bad. Does hypixel just hate me or something/

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